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Table 1 Water exposures in Røros and neighbouring Holtålen, May 2007, including all household members in the cohort

From: A large waterborne outbreak of campylobacteriosis in Norway: The need to focus on distribution system safety

Exposure Cases Total exposed AR % RR (95% CI) Fishers exact p
Holtålen waterworks 3 97 3 ref.  
Røros waterworks 102 243 42 13.5 (4.4 – 41.7) < 0.00001